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authorAndre Przywara <andre.przywara@arm.com>2016-03-16 15:06:41 +0000
committerChristoffer Dall <christoffer.dall@linaro.org>2016-05-20 15:40:09 +0200
commitefffe55af5e16f7935aa0175cf25c386f08219f5 (patch)
treed0ce41aa0e3924f3a6130faf0a2613c937d45441
parent568e8c901eaa62004640cad8b9773819f27461a0 (diff)
downloadlwn-efffe55af5e16f7935aa0175cf25c386f08219f5.tar.gz
lwn-efffe55af5e16f7935aa0175cf25c386f08219f5.zip
KVM: arm/arm64: vgic-new: enable build
Now that the new VGIC implementation has reached feature parity with the old one, add the new files to the build system and add a Kconfig option to switch between the two versions. We set the default to the new version to get maximum test coverage, in case people experience problems they can switch back to the old behaviour if needed. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
-rw-r--r--arch/arm/kvm/Kconfig7
-rw-r--r--arch/arm/kvm/Makefile11
-rw-r--r--arch/arm64/kvm/Kconfig7
-rw-r--r--arch/arm64/kvm/Makefile12
-rw-r--r--virt/kvm/arm/hyp/vgic-v2-sr.c5
5 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index 95a000515e43..02abfff68ee5 100644
--- a/arch/arm/kvm/Kconfig
+++ b/arch/arm/kvm/Kconfig
@@ -46,6 +46,13 @@ config KVM_ARM_HOST
---help---
Provides host support for ARM processors.
+config KVM_NEW_VGIC
+ bool "New VGIC implementation"
+ depends on KVM
+ default y
+ ---help---
+ uses the new VGIC implementation
+
source drivers/vhost/Kconfig
endif # VIRTUALIZATION
diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile
index eb1bf4309c13..a596b58f6d37 100644
--- a/arch/arm/kvm/Makefile
+++ b/arch/arm/kvm/Makefile
@@ -21,7 +21,18 @@ obj-$(CONFIG_KVM_ARM_HOST) += hyp/
obj-y += kvm-arm.o init.o interrupts.o
obj-y += arm.o handle_exit.o guest.o mmu.o emulate.o reset.o
obj-y += coproc.o coproc_a15.o coproc_a7.o mmio.o psci.o perf.o
+
+ifeq ($(CONFIG_KVM_NEW_VGIC),y)
+obj-y += $(KVM)/arm/vgic/vgic.o
+obj-y += $(KVM)/arm/vgic/vgic-init.o
+obj-y += $(KVM)/arm/vgic/vgic-irqfd.o
+obj-y += $(KVM)/arm/vgic/vgic-v2.o
+obj-y += $(KVM)/arm/vgic/vgic-mmio.o
+obj-y += $(KVM)/arm/vgic/vgic-mmio-v2.o
+obj-y += $(KVM)/arm/vgic/vgic-kvm-device.o
+else
obj-y += $(KVM)/arm/vgic.o
obj-y += $(KVM)/arm/vgic-v2.o
obj-y += $(KVM)/arm/vgic-v2-emul.o
+endif
obj-y += $(KVM)/arm/arch_timer.o
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index aa2e34e99582..c4f26ef91e77 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -54,6 +54,13 @@ config KVM_ARM_PMU
Adds support for a virtual Performance Monitoring Unit (PMU) in
virtual machines.
+config KVM_NEW_VGIC
+ bool "New VGIC implementation"
+ depends on KVM
+ default y
+ ---help---
+ uses the new VGIC implementation
+
source drivers/vhost/Kconfig
endif # VIRTUALIZATION
diff --git a/arch/arm64/kvm/Makefile b/arch/arm64/kvm/Makefile
index 122cff482ac4..a7a958ca29d5 100644
--- a/arch/arm64/kvm/Makefile
+++ b/arch/arm64/kvm/Makefile
@@ -20,10 +20,22 @@ kvm-$(CONFIG_KVM_ARM_HOST) += emulate.o inject_fault.o regmap.o
kvm-$(CONFIG_KVM_ARM_HOST) += hyp.o hyp-init.o handle_exit.o
kvm-$(CONFIG_KVM_ARM_HOST) += guest.o debug.o reset.o sys_regs.o sys_regs_generic_v8.o
+ifeq ($(CONFIG_KVM_NEW_VGIC),y)
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-init.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-irqfd.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-v2.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-v3.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio-v2.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio-v3.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-kvm-device.o
+else
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2-emul.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3-emul.o
+endif
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/arch_timer.o
kvm-$(CONFIG_KVM_ARM_PMU) += $(KVM)/arm/pmu.o
diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c
index caac41f48815..a3f12b3b277b 100644
--- a/virt/kvm/arm/hyp/vgic-v2-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v2-sr.c
@@ -21,7 +21,12 @@
#include <asm/kvm_hyp.h>
+#ifdef CONFIG_KVM_NEW_VGIC
+extern struct vgic_global kvm_vgic_global_state;
+#define vgic_v2_params kvm_vgic_global_state
+#else
extern struct vgic_params vgic_v2_params;
+#endif
static void __hyp_text save_maint_int_state(struct kvm_vcpu *vcpu,
void __iomem *base)